I have an object as a body on POST request in my ASP.NET Core 8 application. The object is not serialized, and we found out that the property that is causing all is one with type ZonedDateTime and it has a value:

“completedTimestamp”: “2023-05-18T14:39:55.303+02:00[Europe/Budapest]”,

We are using Newtonsodt.Json library and configured the serializer settings as:

public static IMvcBuilder ConfigureApiBehaviorOptions(this IMvcBuilder builder)
{
    builder.AddNewtonsoftJson(options => 
    {
        var pattern = ZonedDateTimePattern.CreateWithInvariantCulture("yyyy'-'MM'-'dd'T'HH':'mm':'ss;FFFo<Z+HH:mm>'['z']'", DateTimeZoneProviders.Serialization);

        options.SerializerSettings.MissingMemberHandling = MissingMemberHandling.Ignore;
        options.SerializerSettings.DateParseHandling = DateParseHandling.None;
        options.SerializerSettings.Converters.Add(new NodaPatternConverter<ZonedDateTime>(pattern));
    });

    return builder;
}

When the request hits the controller my object is null, if I remove all properties of ZonedDateTime it got mapped.

If I try this witha a console app it works. My console app:

var pattern = ZonedDateTimePattern.CreateWithInvariantCulture(
        "yyyy'-'MM'-'dd'T'HH':'mm':'ss;FFFo<Z+HH:mm>'['z']'",
        DateTimeZoneProviders.Serialization
    );

var settings = new JsonSerializerSettings();
settings.DateParseHandling = DateParseHandling.None;
settings.Converters.Add(new NodaPatternConverter<ZonedDateTime>(pattern));

var json = "{rnt"completedTimestamp": "2023-05-18T14:39:55.303+02:00[Europe/Budapest]"rn}";

var data = JsonConvert.DeserializeObject<Data>(json, settings);

thnx